package com.zym.config;

import com.zym.interceptor.HeaderInterceptor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestContextListener;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration
public class WebMvcConfig implements WebMvcConfigurer {
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        //其中image表示访问的前缀。"file:F:/img/"是文件真实的存储路径
        registry.addResourceHandler("/image/**").addResourceLocations("file:D:/pro/upload/");
    }
    @Override
    public void addInterceptors(InterceptorRegistry registry)
    {
        registry.addInterceptor(getHeaderInterceptor())
                .addPathPatterns("/**")
                .order(-10);
    }
    /**
     * 自定义请求头拦截器
     */
    public HeaderInterceptor getHeaderInterceptor()
    {
        return new HeaderInterceptor();
    }
    /**
     * 跨域配置
     */
    @Bean
    public CorsFilter corsFilter()
    {
        CorsConfiguration config = new CorsConfiguration();
        config.setAllowCredentials(true);
        // 设置访问源地址
        //config.addAllowedOriginPattern("*");

        config.addAllowedOrigin("*");
        // 设置访问源请求头
        config.addAllowedHeader("*");
        // 设置访问源请求方法
        config.addAllowedMethod("*");
        // 有效期 1800秒
        config.setMaxAge(1800L);

        // 添加映射路径，拦截一切请求
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", config);
        // 返回新的CorsFilter
        return new CorsFilter(source);
    }
}
